[MacPorts] #50298: error installing llvm-3.7 when installing pgplot on ElCapitan

[MacPorts]

#50298: error installing llvm-3.7 when installing pgplot on ElCapitan
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  Reporter:  gwen.barnes@…  |      Owner:  jeremyhu@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.4
Resolution:                 |   Keywords:
      Port:  llvm-3.7       |
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Comment (by jeremyhu@…):

 What is the output of:

 {{{
 /usr/bin/clang++ --version
 /usr/bin/ld -v
 }}}

 Do you have any crash logs in /Library/Logs/DiagnosticReports or
 ~/Library/Logs/DiagnosticReports at the time of the failure?  If so,
 please attach them.

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Ticket URL: <https://trac.macports.org/ticket/50298#comment:2>
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